New API demo for the support library FragmentPager class.

Change-Id: I3da4c9fe83cac48054f1efaa40b1f57f68402faa

samples/ApiDemos/src/com/example/android/apis/support/app/FragmentPagerSupport.java

@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.apis.support.app;
+
+import com.example.android.apis.R;
+import com.example.android.apis.Shakespeare;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentActivity;
+import android.support.v4.app.FragmentPager;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v4.app.ListFragment;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.View.OnClickListener;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.TextView;
+
+public class FragmentPagerSupport extends FragmentActivity
+        implements FragmentPager.Adapter {
+    static final int NUM_ITEMS = 10;
+
+    FragmentPager mPager;
+    int mCurPos;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.fragment_pager);
+
+        mPager = (FragmentPager)findViewById(R.id.pager);
+        mPager.setAdapter(this);
+
+        // Watch for button clicks.
+        Button button = (Button)findViewById(R.id.new_fragment);
+        button.setOnClickListener(new OnClickListener() {
+            public void onClick(View v) {
+                mCurPos++;
+                if (mCurPos < NUM_ITEMS) {
+                    mPager.setCurrentItem(mCurPos);
+                } else {
+                    mCurPos--;
+                }
+            }
+        });
+    }
+
+    @Override
+    public int getCount() {
+        return NUM_ITEMS;
+    }
+
+    @Override
+    public Fragment getItem(int position) {
+        return ArrayListFragment.newInstance(position);
+    }
+
+    public static class ArrayListFragment extends ListFragment {
+        int mNum;
+
+        /**
+         * Create a new instance of CountingFragment, providing "num"
+         * as an argument.
+         */
+        static ArrayListFragment newInstance(int num) {
+            ArrayListFragment f = new ArrayListFragment();
+
+            // Supply num input as an argument.
+            Bundle args = new Bundle();
+            args.putInt("num", num);
+            f.setArguments(args);
+
+            return f;
+        }
+
+        /**
+         * When creating, retrieve this instance's number from its arguments.
+         */
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+            mNum = getArguments() != null ? getArguments().getInt("num") : 1;
+        }
+
+        /**
+         * The Fragment's UI is just a simple text view showing its
+         * instance number.
+         */
+        @Override
+        public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                Bundle savedInstanceState) {
+            View v = inflater.inflate(R.layout.fragment_pager_list, container, false);
+            View tv = v.findViewById(R.id.text);
+            ((TextView)tv).setText("Fragment #" + mNum);
+            return v;
+        }
+
+        @Override
+        public void onActivityCreated(Bundle savedInstanceState) {
+            super.onActivityCreated(savedInstanceState);
+            setListAdapter(new ArrayAdapter<String>(getActivity(),
+                    android.R.layout.simple_list_item_1, Shakespeare.TITLES));
+        }
+
+        @Override
+        public void onListItemClick(ListView l, View v, int position, long id) {
+            Log.i("FragmentList", "Item clicked: " + id);
+        }
+    }
+}